This sort of "bending" of opcodes designed to make saving registers on the stack easier (MOVEM was a common part of most 68k functions' preamble) seems like it

This sort of "bending" of opcodes designed to make saving registers on the stack easier (MOVEM was a common part of most 68k functions' preamble) seems like it was a favorite trick: http://blog.moertel.com/posts/2013-12-14-great-old-timey-game-programming-hack.html http://blog.moertel.com/posts/2013-12-14-great-old-timey-gam... (above ran on HN a couple weeks back)